Rolling stock

Abstract

Provided is a rolling stock including: an upper reinforcement beam provided in a railroad-tie direction in a joint portion between an upper end portion of a cab end structure and an upper end portion of a side structure; and a post member coupling the upper reinforcement beam and an end beam of an underframe, in which the post member includes: a lower post portion having a lower end joined to the end beam; an upper post portion having a rear end joined to the upper reinforcement beam; and a window opening post portion provided between the lower post portion and the upper post portion in conformity with an inclination of a front window provided in a cab end structure, the window opening post portion is formed to have a smaller width dimension in a rail direction than a width dimension of the lower post portion in the rail direction.

The invention claimed is: 
     
       1. A rolling stock having a car body formed by joining a cab end structure having a streamlined shape and an end structure respectively to opposite ends of an underframe, side structures, and a roof structure,
 the rolling stock comprising: 
 an upper reinforcement beam provided in a railroad-tie direction between joint portions of an upper end portion of the cab end structure and upper end portions of the side structures; and 
 post members coupling the upper reinforcement beam and an end beam of the underframe, wherein 
 each of the post members includes: a lower post portion having a lower end joined to a reinforcement post provided on the end beam; an upper post portion having a rear end joined to the upper reinforcement beam; and a window opening post portion provided between an upper end portion of the lower post portion and a lower end portion of the upper post portion in an inclined manner to conform to an inclination of a front window provided in the cab end structure, 
 the reinforcement post and the lower post portion are formed from plate materials having the same thickness, 
 the window opening post portion is formed by laminating two plate materials having the same thickness as that of the reinforcement post and the lower post portion, and 
 the window opening post portion is formed to have a smaller width dimension in a rail direction than a width dimension of the lower post portion in the rail direction. 
 
     
     
       2. The rolling stock according to  claim 1 , wherein
 each post member is formed from a solid member. 
 
     
     
       3. The rolling stock according to  claim 2 , wherein
 the cab end structure is provided with a driver's cabin in a center portion in a width direction of the car body, and is provided with a pair of corner posts respectively in opposite end portions in the width direction of the car body, and 
 the post members are a pair of end posts provided in opposite side portions of the driver's cabin, and on inner sides of the car body relative to the corner posts. 
 
     
     
       4. The rolling stock according to  claim 3 , wherein
 each post member has a lower end portion joined to a front face of the end beam and has an upper end portion joined to a front face of the upper reinforcement beam. 
 
     
     
       5. The rolling stock according to  claim 1 , wherein
 the cab end structure is provided with a driver's cabin in a center portion in a width direction of the car body, and is provided with a pair of corner posts respectively in opposite end portions in the width direction of the car body, and 
 the post members are a pair of end posts provided in opposite side portions of the driver's cabin, and on inner sides of the car body relative to the corner posts. 
 
     
     
       6. The rolling stock according to  claim 2 , wherein
 each post member has a lower end portion joined to a front face of the end beam and has an upper end portion joined to a front face of the upper reinforcement beam. 
 
     
     
       7. The rolling stock according to  claim 5 , wherein
 each post member has a lower end portion joined to a front face of the end beam and has an upper end portion joined to a front face of the upper reinforcement beam. 
 
     
     
       8. The rolling stock according to  claim 1 , wherein
 each post member has a lower end portion joined to a front face of the end beam and has an upper end portion joined to a front face of the upper reinforcement beam.